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Oracle database 10g:Administration I Sample Questions:

1. Which two statements are true regarding the SGA_TARGET initialization parameter? (Choose two.)

A) It can be increased up to the value of the SGA_MAX_SIZE parameter.
B) Increasing the value of SGA_TARGET up to the value of SGA_MAX_SIZE disables the automatic shared memory management feature.
C) Reducing the value of the SGA_TARGET parameter takes away memory from both autotuned and manually sized components.
D) Increasing the value of the SGA_TARGET parameter distributes the increased memory among all the autotuned components.

2. You received complaints about the degradation of SQL query performance. You identified top SQL queries that consume time. What would be your next step to find out recommendations about statistics collection and restructuring of the SQL statement to improve query performance?

A) run SQL Tuning Advisor on top SQL statements
B) run the Automatic Database Diagnostic Monitor (ADDM) on top SQL statements
C) run the Automatic Workload Repository (AWR) report
D) run Segment Advisor

3. You are working on an online transaction processing (OLTP) system. You notice that a PL/SQL procedure got executed twice at 2:00 p.m. This has incorrectly updated the EMP_SAL table. How would you revert the table to its state at 2:00 p.m.?

A) Perform point-in-time recovery to 2:00 p.m.
B) Issue the rollback statement with system change number (SCN).
C) Use Flashback Table feature to revert the changes.
D) Restore the entire database from the recent backup and open it.

4. You want to protect your database from single point of failure by multiplexing the control file. Your database is started using SPFILE. You have to perform the following tasks:
1.Shut down the database instance.
2.Copy the control file to new location.
3.Configure the CONTROL_FILES parameter.
4.Restart the instance.
Select the correct order in which these tasks need to be performed.

A) 3,1,2,4
B) 1,2,3,4
C) 2,3,1,4
D) 3,2,1,4

5. The ST_INFO master table has millions of rows that are updated very rarely. It has a STATE_CODE column that contains the value for 25 states. The table is frequently queried on the STATE_CODE column. Which type of index would you suggest to improve the query performance?

A) bitmap
B) function based
C) reverse key
D) B-tree

Solutions: